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import os.path
import time
from wptserve.utils import isomorphic_encode
def main(request, response):
name = request.GET.first(b"name")
sleepTime = float(request.GET.first(b"sleep")) / 1E3
numInitial = int(request.GET.first(b"numInitial"))
path = os.path.join(os.path.dirname(isomorphic_encode(__file__)), name)
body = open(path, u"rb").read()
response.headers.set(b"Content-Type", b"image")
response.headers.set(b"Content-Length", len(body))
response.headers.set(b"Cache-control", b"no-cache, must-revalidate")
response.write_status_headers()
# Read from the beginning, |numInitial| bytes.
first = body[:numInitial]
response.writer.write_content(first)
time.sleep(sleepTime)
# Read the remainder after having slept.
second = body[numInitial:]
response.writer.write_content(second)
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